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首页> 中文期刊> 《生态环境学报》 >3种典型道路景观林对诸城市夏季小气候条件的影响

3种典型道路景观林对诸城市夏季小气候条件的影响

         
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摘要

为了探寻不同道路景观林的小气候效应,以山东省诸城市龙柏( Sabina chinensis cv. Kaizuca)、侧柏( Platycladus orientalis)和杨树(Populus)3种典型道路景观林为研究对象,于2014年7月24—30日,分别在林内、林中和林外进行小气候要素观测,研究了3种典型道路景观林对夏季小气候条件的影响.结果表明,3种道路景观林与空地相比,在各时间段均显著降低了太阳辐射强度,其中侧柏道路林降低最明显,降低了 85.56%.道路景观林内空气温度的日变化呈现先升高后降低的趋势,空气湿度的变化趋势与其相反,其中龙柏道路林空气温度在13:30最高(32.6 ℃),17:30处于最低水平(26 ℃),说明道路景观林在一定程度上具有降温增湿的作用.道路景观林调节空气负氧离子方面差异较大,以空地为对照(689 ind·cm-3),龙柏道路林空气负氧离子浓度增至1 017 ind·cm-3,侧柏道路林和杨树道路林则显著降低,分别为333 ind·cm-3和350 ind·cm-3,白天中各时间段 3 种道路景观林及空地之间的负氧离子浓度差异显著.相关性分析表明,道路林的郁闭度能显著影响林内小气候,其中太阳辐射强度、空气温度、土壤温度与道路景观林郁闭度存在显著的负相关关系.综合分析显示,道路景观林对城市道路土壤有一定的改良作用,侧柏道路景观林能显著降低土壤温度和土壤紧实度,显著提高土壤湿度;龙柏道路景观林能显著提高空气中负氧离子浓度,对局地空气质量有所改善.%In order to explore the microclimate effects of different road landscape forests, three typical urban road forests (Sabina chinensis road forest, Platycladus orientalis road forest and Populus road landscape forest) were taken as research objective in Zhucheng City, Shandong Province. The microclimate factors were observed inside the greenbelts, among the greenbelts and the wild outside respectively. The effects of three typical road landscape forests on the summer microclimate conditions were studied, from July 24 to 30, 2014. The results showed that the solar radiation significantly reduced in three kinds of road landscape forests, and the lowest value was in Platycladus orientalis road forest (P＜0.05, reduced by 85.56%). There was a significant difference among three kinds of road forests in each daily time interval. The daily variations of air temperature of the three kinds of road landscape forests raised firstly and then decreased, however, which was contrary to the air relative humidity. The highest value was in the morning (32.6℃) and the lowest was in the afternoon (26℃) for air temperature in the Sabina chinensis road forest. Three kinds of road forests had functions of lowering temperature and increasing humidity. The air negative oxygen ion of Sabina chinensis (1 017 ind·cm-3) was higher than that of the open land, which was higher than that of Platycladus orientalis and Populus road landscape forest, significantly (333 ind·cm-3and 350 ind·cm-3, respectively). There was a significant difference among all samples for air negative oxygen ion. The coverage correlated significantly and negatively to solar radiation, air temperature and soil temperature. Comprehensive analysis showed that Platycladus orientalis road forest could significantly reduce the soil temperature, increase soil relative humidity and reduce soil compaction, which could improve the soil quality. Sabina chinensis road forest can significantly increase the air negative oxygen concentration and improve air quality. The coverage of road forest can significantly affect the microclimate condition.

著录项

  • 来源
    《生态环境学报》 |2018年第6期|1060-1066|共7页
  • 作者

    李坤; 李传荣; 许景伟; 郭慧玲; 陈玉; 韩滨; 赵玉尧; 张彩虹;

  • 作者单位

    国家林业局泰山森林生态系统定位研究站,山东 泰安 271018;

    山东省土壤侵蚀与生态修复重点实验室,山东 泰安 271018;

    国家林业局泰山森林生态系统定位研究站,山东 泰安 271018;

    山东省土壤侵蚀与生态修复重点实验室,山东 泰安 271018;

    山东省林业科学研究院,山东 济南 251000;

    泰安市泰山风景名胜区管理委员会,山东 泰安 271000;

    泰安市泰山风景名胜区管理委员会,山东 泰安 271000;

    利津县王庄沙区林场建设管理办公室,山东 东营 257400;

    利津县王庄沙区林场建设管理办公室,山东 东营 257400;

    国家林业局泰山森林生态系统定位研究站,山东 泰安 271018;

    山东省土壤侵蚀与生态修复重点实验室,山东 泰安 271018;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 中国绿化建设;生态系统与生态环境;
  • 关键词

    道路景观林; 小气候; 负氧离子; 夏季;

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